float.h revision 360660
1174904Sache/*===---- float.h - Characteristics of floating point types ----------------=== 2174904Sache * 3174904Sache * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4174904Sache * See https://llvm.org/LICENSE.txt for license information. 5174904Sache * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6174904Sache * 7174904Sache *===-----------------------------------------------------------------------=== 8174904Sache */ 9174904Sache 10174904Sache#ifndef __CLANG_FLOAT_H 11174904Sache#define __CLANG_FLOAT_H 12174904Sache 13174904Sache/* If we're on MinGW, fall back to the system's float.h, which might have 14174904Sache * additional definitions provided for Windows. 15174904Sache * For more details see http://msdn.microsoft.com/en-us/library/y0ybw9fy.aspx 16174904Sache * 17174904Sache * Also fall back on Darwin to allow additional definitions and 18174904Sache * implementation-defined values. 19174904Sache */ 20174904Sache#if (defined(__APPLE__) || (defined(__MINGW32__) || defined(_MSC_VER))) && \ 21174904Sache __STDC_HOSTED__ && __has_include_next(<float.h>) 22174904Sache 23174904Sache/* Prior to Apple's 10.7 SDK, float.h SDK header used to apply an extra level 24174904Sache * of #include_next<float.h> to keep Metrowerks compilers happy. Avoid this 25174904Sache * extra indirection. 26174904Sache */ 27174904Sache#ifdef __APPLE__ 28174904Sache#define _FLOAT_H_ 29174904Sache#endif 30174904Sache 31174904Sache# include_next <float.h> 32174904Sache 33174904Sache/* Undefine anything that we'll be redefining below. */ 34174904Sache# undef FLT_EVAL_METHOD 35174904Sache# undef FLT_ROUNDS 36174904Sache# undef FLT_RADIX 37174904Sache# undef FLT_MANT_DIG 38174904Sache# undef DBL_MANT_DIG 39174904Sache# undef LDBL_MANT_DIG 40174904Sache# if __STDC_VERSION__ >= 199901L || !defined(__STRICT_ANSI__) || __cplusplus >= 201103L 41174904Sache# undef DECIMAL_DIG 42174904Sache# endif 43174904Sache# undef FLT_DIG 44174904Sache# undef DBL_DIG 45174904Sache# undef LDBL_DIG 46174904Sache# undef FLT_MIN_EXP 47174904Sache# undef DBL_MIN_EXP 48174904Sache# undef LDBL_MIN_EXP 49# undef FLT_MIN_10_EXP 50# undef DBL_MIN_10_EXP 51# undef LDBL_MIN_10_EXP 52# undef FLT_MAX_EXP 53# undef DBL_MAX_EXP 54# undef LDBL_MAX_EXP 55# undef FLT_MAX_10_EXP 56# undef DBL_MAX_10_EXP 57# undef LDBL_MAX_10_EXP 58# undef FLT_MAX 59# undef DBL_MAX 60# undef LDBL_MAX 61# undef FLT_EPSILON 62# undef DBL_EPSILON 63# undef LDBL_EPSILON 64# undef FLT_MIN 65# undef DBL_MIN 66# undef LDBL_MIN 67# if __STDC_VERSION__ >= 201112L || !defined(__STRICT_ANSI__) || __cplusplus >= 201703L 68# undef FLT_TRUE_MIN 69# undef DBL_TRUE_MIN 70# undef LDBL_TRUE_MIN 71# undef FLT_DECIMAL_DIG 72# undef DBL_DECIMAL_DIG 73# undef LDBL_DECIMAL_DIG 74# undef FLT_HAS_SUBNORM 75# undef DBL_HAS_SUBNORM 76# undef LDBL_HAS_SUBNORM 77# endif 78#endif 79 80/* Characteristics of floating point types, C99 5.2.4.2.2 */ 81 82#define FLT_EVAL_METHOD __FLT_EVAL_METHOD__ 83#define FLT_ROUNDS (__builtin_flt_rounds()) 84#define FLT_RADIX __FLT_RADIX__ 85 86#define FLT_MANT_DIG __FLT_MANT_DIG__ 87#define DBL_MANT_DIG __DBL_MANT_DIG__ 88#define LDBL_MANT_DIG __LDBL_MANT_DIG__ 89 90#if __STDC_VERSION__ >= 199901L || !defined(__STRICT_ANSI__) || __cplusplus >= 201103L 91# define DECIMAL_DIG __DECIMAL_DIG__ 92#endif 93 94#define FLT_DIG __FLT_DIG__ 95#define DBL_DIG __DBL_DIG__ 96#define LDBL_DIG __LDBL_DIG__ 97 98#define FLT_MIN_EXP __FLT_MIN_EXP__ 99#define DBL_MIN_EXP __DBL_MIN_EXP__ 100#define LDBL_MIN_EXP __LDBL_MIN_EXP__ 101 102#define FLT_MIN_10_EXP __FLT_MIN_10_EXP__ 103#define DBL_MIN_10_EXP __DBL_MIN_10_EXP__ 104#define LDBL_MIN_10_EXP __LDBL_MIN_10_EXP__ 105 106#define FLT_MAX_EXP __FLT_MAX_EXP__ 107#define DBL_MAX_EXP __DBL_MAX_EXP__ 108#define LDBL_MAX_EXP __LDBL_MAX_EXP__ 109 110#define FLT_MAX_10_EXP __FLT_MAX_10_EXP__ 111#define DBL_MAX_10_EXP __DBL_MAX_10_EXP__ 112#define LDBL_MAX_10_EXP __LDBL_MAX_10_EXP__ 113 114#define FLT_MAX __FLT_MAX__ 115#define DBL_MAX __DBL_MAX__ 116#define LDBL_MAX __LDBL_MAX__ 117 118#define FLT_EPSILON __FLT_EPSILON__ 119#define DBL_EPSILON __DBL_EPSILON__ 120#define LDBL_EPSILON __LDBL_EPSILON__ 121 122#define FLT_MIN __FLT_MIN__ 123#define DBL_MIN __DBL_MIN__ 124#define LDBL_MIN __LDBL_MIN__ 125 126#if __STDC_VERSION__ >= 201112L || !defined(__STRICT_ANSI__) || __cplusplus >= 201703L 127# define FLT_TRUE_MIN __FLT_DENORM_MIN__ 128# define DBL_TRUE_MIN __DBL_DENORM_MIN__ 129# define LDBL_TRUE_MIN __LDBL_DENORM_MIN__ 130# define FLT_DECIMAL_DIG __FLT_DECIMAL_DIG__ 131# define DBL_DECIMAL_DIG __DBL_DECIMAL_DIG__ 132# define LDBL_DECIMAL_DIG __LDBL_DECIMAL_DIG__ 133# define FLT_HAS_SUBNORM __FLT_HAS_DENORM__ 134# define DBL_HAS_SUBNORM __DBL_HAS_DENORM__ 135# define LDBL_HAS_SUBNORM __LDBL_HAS_DENORM__ 136#endif 137 138#ifdef __STDC_WANT_IEC_60559_TYPES_EXT__ 139# define FLT16_MANT_DIG __FLT16_MANT_DIG__ 140# define FLT16_DECIMAL_DIG __FLT16_DECIMAL_DIG__ 141# define FLT16_DIG __FLT16_DIG__ 142# define FLT16_MIN_EXP __FLT16_MIN_EXP__ 143# define FLT16_MIN_10_EXP __FLT16_MIN_10_EXP__ 144# define FLT16_MAX_EXP __FLT16_MAX_EXP__ 145# define FLT16_MAX_10_EXP __FLT16_MAX_10_EXP__ 146# define FLT16_MAX __FLT16_MAX__ 147# define FLT16_EPSILON __FLT16_EPSILON__ 148# define FLT16_MIN __FLT16_MIN__ 149# define FLT16_TRUE_MIN __FLT16_TRUE_MIN__ 150#endif /* __STDC_WANT_IEC_60559_TYPES_EXT__ */ 151 152#endif /* __CLANG_FLOAT_H */ 153